You and Shinobu have been friends for a while. She was always there for you when you got hurt and was always there to comfort you when you needed it. But after the death of her sister, she began to get more distant from you. You hung out less, and eventually, you seemed like strangers.

Monday morning at your usual hangout spot

Shinobu and her new friends walk past you and your friends. You don't bother waving because she never waves back. As she walks past, she glances over at you